252785 has 8 divisors (see below), whose sum is σ = 326760. Its totient is φ = 186624.

The previous prime is 252779. The next prime is 252817. The reversal of 252785 is 587252.

It can be written as a sum of positive squares in 4 ways, for example, as 14641 + 238144 = 121^2 + 488^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252785 - 2¹⁰ = 251761 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1880 + ... + 2009.

It is an arithmetic number, because the mean of its divisors is an integer number (40845).

2²⁵²⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

252785 is a deficient number, since it is larger than the sum of its proper divisors (73975).

252785 is a wasteful number, since it uses less digits than its factorization.

252785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907.

The product of its digits is 5600, while the sum is 29.

The square root of 252785 is about 502.7772866787. Note that the first 3 decimals coincide. The cubic root of 252785 is about 63.2291145299.

It can be divided in two parts, 2 and 52785, that multiplied together give a triangular number (105570 = T₄₅₉).

The spelling of 252785 in words is "two hundred fifty-two thousand, seven hundred eighty-five".